115results about How to "Contour smoothing" patented technology

The invention discloses a spatial-spectral integrated hyperspectral remote sensing image classification method. A conventional hyperspectral image classification technology mainly focuses on how to use the classification information of spectral spaces better, but ignores the information of image spatial domains. According to the invention, in the process of carrying out self spectral feature classification by using data, spectral classification results are supplemented by using effective spatial domain information combining a region growing method with a binary morphology method. According to the invention, an SVM (support vector machine) based classification method is adopted for carrying out spectral domain classification on data firstly; then, effective spatial domain information is introduced by using the region growing method and the binary morphology method so as to correct spectral classification results. According to the invention, information contained in hyperspectral data is used more fully, and the precision of hyperspectral image classification is improved.

The present invention relates to improved single-use bioreactors comprising disposable plastic bags for cell cultivation. The invention provides an inflatable bioreactor bag for cell cultivation comprised of a top and a bottom sheet of polymer material that are joined along their edges to form a sealed bag, wherein two opposing edges are formed as clamping edges to allow clamping of the bioreactor bag to a rocker type bioreactor, and wherein the bioreactor bag is provided with a wrinkle preventing structure at each end of the clamping edges. The bag avoids formation of undesired wrinkles or creases which otherwise lead to fatigue of the plastic and eventually fracture.

A cranial orthosis includes a sensor to monitor one or more conditions of an infant wearing the cranial orthosis. The cranial orthosis is preferably contoured to match the curvature of the fronto-temporal, parietal and occipital areas of an infant's cranial vault to provide protection against the acquisition of postural cranial deformities as a result of the infant's sleeping in the supine position. The orthosis is designed to be of universal fit, as determined by the infant's fronto-occipital head circumference (FOC) measurement. The interior dimensions of the orthosis can be enlarged to accommodate growth of the infant's head without requiring replacement. The sensor may detect oxygen saturation, pulse, temperature, or any other measureable condition or combination of conditions. The system includes an alarm that is triggered when a sensed condition crosses a selected threshold level.

A ring insert for an air intake conduit for an internal combustion engine comprising a sleeve-shaped body which is tightly mounted within the air intake conduit. The body has an inner surface which includes an annular surface in the shape of a truncated cone defining an annular inclined surface that is narrower at the forward edge of the body than at the rearward edge forming a venturi directly adjacent the rearward edge. The forward edge of the body is smoothly contoured and the rearward edge of the body is smoothly contoured.

A cranial orthosis is contoured to match the curvature of the fronto-temporal, parietal and occipital areas of an infant's cranial vault to provide protection against the acquisition of postural cranial deformities as a result of the infant's sleeping in the supine position. The orthosis is designed to be of universal fit, as determined by the infant's fronto-occipital head circumference (FOC) measurement. Moreover, the interior dimensions of the orthosis can be enlarged to accommodate growth of the infant's head without requiring replacement. The orthosis is a molded plastic appliance in the form of a shell, headband or helmet having interior surfaces that are smoothly contoured to conform in shape to the surface curvature of the occipital, temporal and parietal areas of a healthy human infant having normal cranium size, shape and symmetry. The cavity is sized to provide a close, non-interfering fit of the conformed interior surfaces in facing relation to the occipital, fronto-temporal and parietal areas of the infant's cranial vault, thereby allowing the the infant's head weight forces to spread substantially uniformly across one or more of the conformed interior surfaces while the infant is resting on a sleep surface in the supine position.

A bidirectional direct sequence spread spectrum half-duplex RF modem. The RF modem can be applied to transmit and receive numerous types of analog and digital pulse modulation. The modem incorporates a SAW based correlator for performing the spreading and de-spreading functions in the transmitter and receiver. A programmable frequency synthesizer provides the frequency source for various signals in the modem including the local oscillator (LO), IF interrogating pulse and clock signals. An upconverter/downconverter provides frequency translation to the desired frequency band. Pulse gating and interrogating pulse shaping are employed to reduce the spectral side bands of the transmitted spread pulse. The RF modem operates as a analog or digital pulse transmitter and receiver. It is adapted to be generic and is versatile enough to be used in many different types of data communication systems, such as OOK, PWM and PPM. The RF modem can be used as the physical (PHY) layer in a layered communication system such as the ISO OSI communication stack. In an alternative embodiment, the transmission bit rate is increased by using a plurality of correlators wherein each is configured with a unique function (i.e., code) that is orthogonal to the other functions.

The invention discloses a method for preparing anisotropic neodymium iron boron magnetic powder through directionally breaking a thermal deformed magnet. The method comprises the following steps: (1) preparing a full-densification isotropic neodymium iron boron magnet; (2) preparing a thermal deformation anisotropic neodymium iron boron magnet; (3) directionally breaking the thermal deformation magnet: directionally breaking the round-cake-shaped anisotropic neodymium iron boron magnet, prepared in the step (2), by applying a symmetrical and circulating applied force along a radial direction at room temperature under the protection of argon, wherein the breaking force is 600-700MPa, so as to obtain a lamellar magnetic sheet; and (4) breaking the magnetic sheet in a regularized way: carrying out regularized breaking on the magnetic sheet prepared in the step (3) under the protection of the argon by adopting a rolling minding method, so as to obtain the anisotropic neodymium iron boron magnetic powder.

The invention provides a method for forming a word stock. The method includes steps of 1) acquiring word scripts; 2) scanning the word scripts into script images; 3) digitally fitting the script images to form a character outline; 4) automatically processing the character outline so as to remove excessive outline curves in the character outline and excessive points on the outline curves; 5) forming the word stock and testing. Correspondingly, the invention further provides a device for forming the word stock. By the aid of the method and the device for forming the word stock, an individual word stock can be formed and is lower in data flow as compared with existing individual word stock.

The invention discloses a flying body with curved-surface micro groove structures and a manufacturing method of the flying body. The flying body comprises a cylinder and a conical head, wherein multiple micro grooves are uniformly distributed at intervals along the axial section of the curved surface of the conical head, and the curved surface is a two-dimensional rotating surface in a parabolic surface or an elliptical surface. During machining, the manufacturing method comprises the steps of firstly machining a cylindrical material into the flying body which is provided with the conical head and has a rough curved surface with a curved surface profile; then machining the rough curved surface into a smooth curved surface along the curved surface profile by utilizing a corner of the annular end surface of a fine-grained diamond grinding wheel; finally axially steering the grinding wheel, enabling the grinding wheel to be vertical to a workpiece rotating shaft or to be in a certain inclination angle relative to the workpiece rotating shaft, enabling a workpiece to be fixed, and carrying out radial feeding along the radial direction of the smooth curved surface profile by utilizing a V-shaped pointed end of the diamond grinding wheel in high-speed rotation so as to machine the micro grooves in the curved surface. According to the manufacturing method disclosed by the invention, the smooth curved surface with the regular and controllable micro groove structures is machined on the flying body, the air resistance of the flying body can be reduced, the laser scattering can be enhanced, and resistance reduction and invisibility of flying can be finally realized.

The invention discloses a bucket rod of an excavator. The bucket rod comprises a bucket rod main body consisting of two side plates and a surrounding plate; the bucket rod main body is provided with a pair of bucket cylinder supports and a pair of lug plates; each of the two side plates is formed by welding a front side plate, a middle side plate and a rear side plate; the surrounding plate is formed by welding an upper cover plate, a bent plate and a lower cover plate; the seam between the upper cover plate and the bent plate is opposite to the middle part of the upper plane of the rear side plate, and the seam between the bent plate and the lower cover plate is opposite to the lower part of the middle plane of the rear side plate; and a horizontal reinforcing plate is arranged between the two bucket cylinder supports and the two lug plates, an I type vertical reinforcing plate is welded on the upper cover plate and between the two bucket cylinder supports, and an II type vertical reinforcing plate is welded on the bent plate and between the two lug plates. Under equal conditions, the average stress of the bucket rod is low, the stress distribution of the bucket rod is uniform, and the strength of the bucket rod is improved; and by properly reducing the thickness of a part of plate, the bucket rod is lightened.

An air pillow system for an air intake tract includes a plurality of inwardly extending ribs arranged in a distally spaced arrangement and defining a plurality of peripherally closed air pillow pockets. Each pocket has an open end opening towards an airflow stream to be guided. Each rib is configured with an inwardly extending length selected to correlate with a boundary of a low-loss airflow glide path. The air pillows operate to guide the airflow stream along the low-loss airflow glide path with reduced airflow stream turbulence and airflow pressure loss.

The invention discloses a spare part profile processing method. The profile line of a processed profile consists of an arc section and two straight line sections arranged on the same plane; and the two straight line sections are respectively connected with the left end point and the right end point of the arc section and are both tangent to the arc section. The method comprises the steps of establishing a plane rectangular coordinate system and adopting a numerical control machine to process the spare part profiles, wherein the plane rectangular coordinate system is established as follows: the circle center of the arc section is taken as an origin O of coordinates and the straight line on which the origin O of coordinates and the middle point M of the arc section are arranged is adopted as a longitudinal coordinate to establish the plane rectangular coordinate system; and the spare part profiles are processed by the numerical control machine as follows: 201: setting initial parameters; 202: calculating the coordinate values of each end point of processed profile lines; and 203: machining. The spare part profile processing method has the advantages of reasonable design, simple processing steps, convenient realization and strong commonality as well as low error rate. Moreover, the practical problems like longer time spent on calculating coordinate points and programming corresponding software programs and high error rates existed in the profile processing process consisting of double straight lines and an arc in a tangent way.